logisim software package provides graphical tool for designing and simulating logic circuits, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install logisim
logisim is installed in your system.
Make ensure the logisim package were installed using the commands given below,
$ sudo dpkg-query -l | grep logisim *
You will get with logisim package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Java |
| Package | logisim |
| Version | 2.7.1~dfsg-1 |
| Description | graphical tool for designing and simulating logic circuits |
| Sub Section | Java |